7. Functions and arrays. (8 points) Consider the following three Java functions.

public static int halve1(int x) { x = x / 2; 

return x; }

public static void halve2(int[] a) { int n = a.length; for (int i = 0; i < n; i++) { 

 halve1(a[i]); 

 a[i] = halve1(a[i]); } 

}

public static void halve3(int[] a) { int n = a.length; int[] b = new int[n/2]; for (int i = 0; i < n/2; i++) 

 b[i] = a[i]; a = b; 

}

(a) What are the contents of the array a[] after executing the following three lines of code? Write your answer in the box below.

 int[] a = { 16, 32, 48, 64 }; halve2(a); halve2(a); 

(b) What are the contents of the array a[] after executing the following three lines of code? Write your answer in the box below.

 int[] a = { 16, 32, 48, 64 }; halve3(a); halve3(a);